Error when trying to connect

[aereaux]

I am trying to connect to my meshcore node using my Linux machine, but getting this error:

$ meshcore-cli -D
INFO:meshcore:Searching first MC BLE device
INFO:meshcore:Found device <device>
DEBUG:meshcore:Connecting with client: None, [...]
DEBUG:meshcore:Directly using a passed device.
INFO:meshcore:BLE Connection started
DEBUG:meshcore:Connected successfully: [...]
DEBUG:meshcore:Sending appstart command
DEBUG:meshcore:Sending raw data: bytearray(b'\x01\x03      mccli')
DEBUG:meshcore:Dispatching event: EventType.CONNECTED, {'connection_info': '[...]'}, {}
DEBUG:meshcore:BLE device disconnected: [...] (is_connected: False)
DEBUG:meshcore:Connection lost: ble_disconnect
DEBUG:meshcore:Dispatching event: EventType.DISCONNECTED, {'reason': 'ble_disconnect', 'reconnect_failed': False}, {}

What might I be doing wrong?